1. A quick reminder: The Moomins are a fairytale family of Finnish "trolls" who have adventures with their friends and neighbours in Moomin Valley.
2. The now internationally beloved Moomins first appeared in a series of comic strips and novels by Finnish writer, artist, and illustrator Tove Jansson.
3. So now to the stuff you might not know. Jansson drew her first ever Moomin on the toilet wall of her family's summer house during a childhood argument with her brothers about philosophy.
4. The first printed Moomin appeared in an anti-Hitler cartoon Jansson drew for satirical Finnish magazine Garm in 1938. She signed herself off with an angry Moomin.
5. At that time, her Moomin was called Snork and looked thinner and creepier than the rounded, friendly Moomins we know today.
6. Britain's first glimpse of Moomintroll was a shot of his bottom in the first Moomin comic strip to run in The London Evening News in 1952. The series continued until 1970.
7. Jansson started producing Moomin novels alongside her comic strips. She wrote the first Moomin novel, Moomin and the Great Flood, at the end of the Second World War.
8. Incidentally, Tove Jansson is pronounced "Tor-vay Yarn-son".
9. Although Jansson was Finnish, The Moomins was originally written in Swedish.
10. Moomin Valley was inspired by the area around Jansson's family summer house in northern Finland.
The fertile greenery of Moomin Valley echoes Pellinki, the archipelago in the Gulf of Finland where Jansson spent her childhood summers.
11. The adventurous Moominpappa, with his top hat and seafaring nature, was based on Jansson's storm-chasing father.
12. Janssen had both male and female romantic partners over the course of her life. Too-Ticky, the piratical tomboy, was based on Jansson's life partner, the celebrated graphic designer Tuulikki Pietilä.